I know we can use several carriers such as Carbon Fiber Carriers, Artificial Aquatic Mats, Bamboo poles, Pebbles, to cultivate periphyton. But I would like to know which one is more appropriate for the preparation of inoculant in in-vitro experiment. Moreover after transferring them to paddy lands Which one has a certain positive effect on decreasing total phosphorus (TP) of water and enhancing TP concentrations in sediments.